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ASPF THERMOSTAT CONNECTIONS
The following composite wiring diagrams detail various configurations in which the ASPF air handlers can be used. Ex-
amples include single-stage cooling and heat pump with single or two-stage electric heating. All these configurations can be
applied with convenient connections to outdoor thermostat applications.
The following sections will be detailed:
• Single-Stage Cooling (GMC Thermostat Part #CHT18-60 or equivalent.)
• Heat Pump (GMC Thermostat Part #18-60 or equivalent)
Each diagram details the connections between room thermostat and ASPF air handlers, and the connections between the
ASPF air handlers and the Condensing Unit (or Heat Pump) with optional connections to Outdoor Thermostats. For each
configuration, refer to the explanation of the proper jumper(s) to remove for the corresponding blower speed that will result
in the programmed ECM™ motor.
IMPORTANT: WHEN MATCHING THE ASPF AIR HANDLERS TO A SINGLE SPEED COOL-
ING OR HEAT PUMP UNIT, REMEMBER TO CONNECT “Y” FROM THE THERMOSTAT TO
THE “Y2” ON THE LOW VOLTAGE TERMINAL BOARD.
An equivalent thermostat can be used in place of the Goodman thermostat part number. The GMC thermostats that listed
are mercury type thermostats.
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
COOLING UNIT WITH OPTIONAL HEAT KITS OF 10 kW AND BELOW
GR
C
W1
YW
W2
Y2
Y1
O
G
R
TB
YL
BL
TO CONDENSING UNIT
24V CONNECTION
BL
YL
YL
WH
GR
RD
#18 GA. 4 WIRES WITH COOLING
3 WIRES WITHOUT
NOTES:
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE
FIRST TO CLOSE AND THE LAST TO OPEN.
2) JUMPER W1 AND W2 TOGETHER IF OT-2 IS NOT
USED.
3) REMOVE WIRE WHEN USING OUTDOOR THERMO-
STAT.
NOMENCLATURE:
OT - OUTDOOR THERMOSTAT (OPTIONAL)
EHR - EMERGENCY HEAT RELAY (OPTIONAL)
COLOR CODES
RD - RED
YL - YELLOW
BL - BLUE
BR - BROWN
OR - ORANGE
WH - WHITE
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.